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The impact of the electrode morphology on the overall impedance in liquid and solid electrochemistry is discussed for two examples: for an electrode with small surface roughness and for an electrode exhibiting deep, equidistant pores. The impedance is calculated numerically using the finite element method. Non-polarizable as well as ideally and partially polarizable electrodes are considered. The...
The influence of point contacts as constituents of imperfect contacts on the total impedance is treated rigorously in two dimensions by finite element simulations. The frequency dependence of the electrical potential distribution and the impedance spectra are calculated for different electrode geometries. It is shown how the existence of insulating gaps at the electrode/solid electrolyte interface...
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